wip(tickets): backend createdBy (#5) + bulk status/priority/delete (#6)

Ajoute created_by sur IssueIndexEntry/TicketSummaryDto + filtre createdBy
(#5), et les use cases BulkUpdateIssueStatus/Priority + BulkDeleteIssues
avec les DTO/outils MCP idea_ticket_bulk_* associés (#6).

NON VERT : BulkDeleteIssues::execute référence BatchIssueResult::deleted(),
constructeur pas encore ajouté à BatchIssueResult (seuls ok/err existent) ->
`cargo check` échoue (E0599 dans application::issues::mod). Reste à
DevBackend avant toute QA/merge.

Branché sur feature/sdk-integration (dépend du commit #2 dans
orchestrator/mcp/server.rs et tools.rs) ; à rebaser sur develop une fois
feature/sdk-integration mergé.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

crates/infrastructure/tests/issue_store.rs

@@ -2,7 +2,7 @@ use std::path::PathBuf;
 use std::str::FromStr;
 
 use domain::{
-    AgentIssueRef, AgentIssueRole, Issue, IssueActor, IssueId, IssueListFilter,
+    AgentId, AgentIssueRef, AgentIssueRole, Issue, IssueActor, IssueId, IssueListFilter,
     IssueNumberAllocator, IssuePriority, IssueRef, IssueStatus, IssueStore, IssueStoreError,
     MarkdownDoc, ProjectPath, SprintId,
 };
@@ -184,6 +184,60 @@ async fn issue_store_lists_by_index_filters_with_empty_or_and_and_semantics() {
     assert_eq!(by_status_and_priority[0].title, "Beta");
 }
 
+#[tokio::test]
+async fn issue_store_filters_by_created_by_from_index() {
+    let tmp = TempDir::new();
+    let root = tmp.root();
+    let store = FsIssueStore::new();
+    let agent_id = AgentId::new_random();
+    store
+        .create(&root, &issue(&root, 1, "User ticket"))
+        .await
+        .unwrap();
+    let agent_ticket = Issue::new(
+        IssueId::new_random(),
+        domain::IssueNumber::new(2).unwrap(),
+        "Agent ticket",
+        MarkdownDoc::new("Initial description"),
+        IssueStatus::Open,
+        IssuePriority::High,
+        MarkdownDoc::new("Initial carnet"),
+        Vec::new(),
+        Vec::new(),
+        IssueActor::Agent { agent_id },
+        1_000,
+    )
+    .unwrap();
+    store.create(&root, &agent_ticket).await.unwrap();
+
+    let by_user = store
+        .list(
+            &root,
+            IssueListFilter {
+                created_by: Some(IssueActor::User),
+                ..IssueListFilter::default()
+            },
+        )
+        .await
+        .unwrap();
+    let by_agent = store
+        .list(
+            &root,
+            IssueListFilter {
+                created_by: Some(IssueActor::Agent { agent_id }),
+                ..IssueListFilter::default()
+            },
+        )
+        .await
+        .unwrap();
+
+    assert_eq!(by_user.len(), 1);
+    assert_eq!(by_user[0].title, "User ticket");
+    assert_eq!(by_agent.len(), 1);
+    assert_eq!(by_agent[0].title, "Agent ticket");
+    assert_eq!(by_agent[0].created_by, IssueActor::Agent { agent_id });
+}
+
 #[tokio::test]
 async fn issue_store_text_filter_matches_exact_ref_or_number_without_numeric_substring() {
     let tmp = TempDir::new();

crates/infrastructure/tests/mcp_server.rs

@@ -749,6 +749,8 @@ async fn tools_list_advertises_the_idea_tools_with_schemas() {
         "idea_ticket_update",
         "idea_ticket_update_status",
         "idea_ticket_update_priority",
+        "idea_ticket_bulk_update_status",
+        "idea_ticket_bulk_update_priority",
         "idea_ticket_read_carnet",
         "idea_ticket_update_carnet",
         "idea_ticket_link",
@@ -767,11 +769,11 @@ async fn tools_list_advertises_the_idea_tools_with_schemas() {
         );
     }
     assert!(!names.contains(&"idea_reply"));
-    assert_eq!(
-        tools.len(),
-        31,
-        "exactly the thirty-one exposed idea_* tools; got {names:?}"
-    );
+        assert_eq!(
+            tools.len(),
+            33,
+            "exactly the thirty-three exposed idea_* tools; got {names:?}"
+        );
 
     // Every tool advertises an object input schema.
     for t in tools {
@@ -1361,11 +1363,21 @@ async fn bounded_ticket_mutation_tools_reject_other_issue_before_ticket_provider
         ),
         (
             23,
+            "idea_ticket_bulk_update_status",
+            json!({ "refs": ["#7", "#8"], "status": "closed" }),
+        ),
+        (
+            24,
+            "idea_ticket_bulk_update_priority",
+            json!({ "refs": ["#8"], "priority": "high" }),
+        ),
+        (
+            25,
             "idea_ticket_link",
             json!({ "ref": "#8", "targetRef": "#9", "kind": "blocks", "expectedVersion": 1 }),
         ),
         (
-            24,
+            26,
             "idea_ticket_unlink",
             json!({ "ref": "#8", "targetRef": "#9", "kind": "blocks", "expectedVersion": 1 }),
         ),
@@ -1422,11 +1434,21 @@ async fn bounded_ticket_mutation_tools_allow_bound_issue_to_reach_ticket_provide
         ),
         (
             33,
+            "idea_ticket_bulk_update_status",
+            json!({ "refs": ["#7"], "status": "closed" }),
+        ),
+        (
+            34,
+            "idea_ticket_bulk_update_priority",
+            json!({ "refs": ["#7"], "priority": "high" }),
+        ),
+        (
+            35,
             "idea_ticket_link",
             json!({ "ref": "#7", "targetRef": "#9", "kind": "blocks", "expectedVersion": 1 }),
         ),
         (
-            34,
+            36,
             "idea_ticket_unlink",
             json!({ "ref": "#7", "targetRef": "#9", "kind": "blocks", "expectedVersion": 1 }),
         ),